# coding=utf-8
  
import turtle
from datetime import *
  
# 抬起画笔，向前运动一段距离放下
def Skip(step):
    turtle.penup()
    turtle.forward(step)
    turtle.pendown()
  
def mkHand(name, length):
    # 注册Turtle形状，建立表针Turtle
    turtle.reset()
    Skip(-length * 0.1)
    # 开始记录多边形的顶点。当前的乌龟位置是多边形的第一个顶点。
    turtle.begin_poly()
    turtle.forward(length * 1.1)
    # 停止记录多边形的顶点。当前的乌龟位置是多边形的最后一个顶点。将与第一个顶点相连。
    turtle.end_poly()
    # 返回最后记录的多边形。
    handForm = turtle.get_poly()
    turtle.register_shape(name, handForm)
  
def Init():
    global secHand, minHand, hurHand, printer
    # 重置Turtle指向北
    turtle.mode("logo")
    # 建立三个表针Turtle并初始化
    mkHand("secHand", 135)
    mkHand("minHand", 125)
    mkHand("hurHand", 90)
    secHand = turtle.Turtle()
    secHand.shape("secHand")
    minHand = turtle.Turtle()
    minHand.shape("minHand")
    hurHand = turtle.Turtle()
    hurHand.shape("hurHand")
    
    for hand in secHand, minHand, hurHand:
        hand.shapesize(1, 1, 3)
        hand.speed(0)
    
    # 建立输出文字Turtle
    printer = turtle.Turtle()
    # 隐藏画笔的turtle形状
    printer.hideturtle()
    printer.penup()
     
def SetupClock(radius):
    # 建立表的外框
    turtle.reset()
    turtle.pensize(7)
    for i in range(60):
        Skip(radius)
        if i % 5 == 0:
            turtle.forward(20)
            Skip(-radius - 20)
            
            Skip(radius + 20)


            Skip(-radius - 20)
        else:
            turtle.dot(5)
            Skip(-radius)
        turtle.right(6)
         
def Week(t):  
    week = ["星期一", "星期二", "星期三",
            "星期四", "星期五", "星期六", "星期日"]
    return week[t.weekday()]
  
def Date(t):
    y = t.year
    m = t.month
    d = t.day
    second = t.second + t.microsecond * 0.000001
    minute = t.minute + second / 60.0
    hour = t.hour + minute / 60.0
    return "%04s年%02d月%02d日 %02d:%02d:%02d" % (y, m, d, hour, minute, second)
  
def Tick():
    try:
        # 绘制表针的动态显示
        t = datetime.today()
        second = t.second + t.microsecond * 0.000001
        minute = t.minute + second / 60.0
        hour = t.hour + minute / 60.0
        secHand.setheading(-6 * second)
        minHand.setheading(-6 * minute)
        hurHand.setheading(-30 * hour)
         
        turtle.tracer(False)
        printer.forward(65)
        printer.write(Week(t), align="center",
                      font=("Courier", 14, "bold"))
        printer.back(130)
        printer.write(Date(t), align="center",
                      font=("Courier", 14, "bold"))

        printer.home()
        turtle.tracer(True)
      
        # 100ms后继续调用tick
        turtle.ontimer(Tick, 100)
    finally:
        print("a tick pass away")

  
def main():
    # 打开/关闭龟动画，并为更新图纸设置延迟。
    turtle.tracer(False)
    Init()
    SetupClock(160)
    turtle.tracer(True)
    Tick()
    turtle.mainloop()
  
if __name__ == "__main__":
    main()
